Environmental pollution and health hazards from distillery wastewater and treatment approaches to combat the environmental threats: A review.

The expansion of environment-friendly materials based on natural sources increases dramatically in terms of biodegradable, recyclable, and environmental disputes throughout the world. Plant-based natural fiber, a high potential field of the reinforced polymer composite material, is considered as lightweight and economical products as they possess lower density, significant material characteristics, and extraordinary molding flexibility. The usage of plant fibers on the core structure of composite materials have drawn significant interest by the manufacturers to meet the increasing demand of the consumers for sustainable features with enhanced mechanical performances and functionalities. The plant fiber-based composites have widespread usage in construction, automotive, packaging, sports, biomedical, and defense sectors for their superior characteristics. Therefore, this critical review would demonstrate an overview regarding the background of natural fiber composites, factors influencing the composite properties, chemical interaction between the fiber and matrices, future potentiality, and marketing perspectives for triggering new research works in the field of biocomposite materials.

Comprehensive review on plant fiber-reinforced polymeric biocomposites

This paper reports a novel route for the coloration of polyester fabric with green synthesized silver nanoparticles (G-AgNPs@PET) using chitosan as a natural eco-friendly reductant. The formation of AgNPs was confirmed by UV-visible spectroscopy. The morphologies and average particles size of G-AgNPs was investigated by transmission electron microscope (TEM) analysis. The uniform deposition of G-AgNPs on the PET fabric surface was confirmed with scanning electron microscopy (SEM) and Fourier transform infrared (FT-IR) spectroscopy. The thermal properties were investigated using a thermogravimetric analyzer (TGA). The coloration and fastness properties of fabric were found to be significantly improved, a result related to the surface plasmon resonance of G-AgNPs. The antibacterial properties of fabric were also found to be excellent as more than 80% bacterial reduction was noticed even after 10 washing cycles. Overall, the proposed coating process using green nanoparticles can contribute to low-cost production of sustainable textiles.

https://www.mdpi.com/2079-4991/9/4/569/pdf

A Novel Coloration of Polyester Fabric through Green Silver Nanoparticles (G-AgNPs@PET).

Bio-synthesized palladium nanoparticles using alginate for catalytic degradation of azo-dyes

This study presents the functionalization of organic cotton fabric (OCF) by green synthesized silver nanoparticles (AgNPs). Nontoxic sodium alginate (SA) was utilized as a reducing and stabilizing ...

Multifunctional organic cotton fabric based on silver nanoparticles green synthesized from sodium alginate

In this work, Eucommia ulmoides leaf extract (EUOLstabilized silver nanoparticles (EUOL@AgNPs) incorporated sulfonated polyether sulfone (SPES)/polyethersulfone (PES) electrospun nanofiber membranes (SP ENMs) were prepared by electrospinning, and they were studied for the removal of lead (Pb(II)) and cadmium (Cd(II)) ions from aqueous solutions. The SP ENMs with various EUOL@AgNPs loadings were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscope, thermo-gravimetric analysis (TGA), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and contact angle (CA) measurements. The adsorption studies showed that the adsorption of Cd(II) and Pb(II) was rapid, achieved equilibrium within 40 min and 60 min, respectively and fitted with non-linear pseudo-second-order (PSO) kinetics model. For Cd(II) and Pb(II), the Freundlich model described the adsorption isotherm better than the Langmuir isotherm model. The maximum adsorption capacity for Cd(II) and Pb(II) was 625 and 370.37 mg g-1 respectively at neutral pH. Coexisting anions of fluoride, chloride, and nitrate had a negligible influence on Cd(II) removal than the Pb(II). On the other hand, the presence of silicate and phosphate considerably affected Cd(II) and Pb(II) adsorption. The recyclability, regeneration, and reusability of the fabricated EUOL@AgNPs-SP ENMs were studied and they retained their high adsorption capacity up to five cycles. The DFT measurements revealed that SP-5 ENMs exhibited the highest adsorption selectivity for Cd(II) and the measured binding energies for Cd(II), Pb(II), are 219.35 and 206.26 kcal mol-1, respectively. The developed ENM adsorbent may find application for the removal of heavy metals from water. 

/pdf/ag-nanoparticles-immobilized-sulfonated-polyethersulfone-2invu9sr.pdf

Ag nanoparticles immobilized sulfonated polyethersulfone/polyethersulfone electrospun nanofiber membrane for the removal of heavy metals

Reactive dyes are the perfect choice for dyeing of cellulosic fibers due to produce a wide gamut of bright colors with excellent color fastness, however environmental pollution is increasing in recent days seeing that of making use of inorganic salt and alkali. This paper offers a new avenue for eco-friendly dyeing of linen fiber by incorporating biodegradable alkaline organic salts in presence of three commercial reactive dyes and amongst them organic salt i.e. disodium maleate showed superior result in terms of color strength (K/S), dye exhaustion (%), color fastness, tensile strength and crease recovery angle parameters that were evaluated by traditional technique.

/pdf/eco-friendly-coloration-of-linen-to-ameliorate-its-practical-ara29dxwtf.pdf

Eco-friendly coloration of linen to ameliorate its practical approach

Abstract Membrane materials might be used for face protection because they can decontaminate the inhaled air from particle pollution and viruses like the SARS-Cov0-2 which damages our respiration system. In this study, plyethersulfone membranes (PES) were synthesized with green solvent at room temperature and its filtration effectiveness was investigated against nano-bacteria (size 0.05 to 0.2 µm) by measuring their Bacterial Filtration Efficiency (BFE) and micro aerosol size (0.3 µm), and Particulate Filtration Efficiency (PFE). The average SARS-CoV-2 diameters are between 50 nm to 160 nm. A series of experiments were performed to accomplish between 0.03 to 0.21 µm PES sponge like diameters so that can be used for SARS-CoV-2 filtration. Results showed that nanofiltration/ultrafiltration could filter 99.9% of bacteria and aerosol from contaminated air the size of the Covid-19 molecule. Graphical Abstract

https://www.tandfonline.com/doi/pdf/10.1080/20550324.2021.2008209?needAccess=true

New generation washable PES membrane face mask for virus filtration

In recent years, the environmental pollution caused by micro/nanoplastics (MNPs) has increased. As a result of their negative impact on human health and the environment, MNPs have emerged as new scientific challenges. However, there are still some inconclusive findings. In this perspective, we analyze the traditional membrane performance that is thought to be applicable for MNPs removal, intending to highlight the electrospun nanofiber membrane as a potential next-generation feasible membrane technique. However, the lack of inter-comparability across studies and the limited data sources account for the high level of uncertainty associated with the application of electrospun nanofiber membranes in the control of MNPs pollution. Hence, we propose a long-term road map for controlling MNPs pollution in the environment with electrospun nanofiber membranes, which will assist in mitigating the difficulties encountered during the experimental stages.

/pdf/electrospun-nanofiber-membranes-for-the-control-of-micro-ru3ryplx.pdf

Md. Eman Talukder

Papers

A Novel Coloration of Polyester Fabric through Green Silver Nanoparticles (G-AgNPs@PET).

Ag nanoparticles immobilized sulfonated polyethersulfone/polyethersulfone electrospun nanofiber membrane for the removal of heavy metals

Eco-friendly coloration of linen to ameliorate its practical approach

New generation washable PES membrane face mask for virus filtration

Electrospun nanofiber membranes for the control of micro/nanoplastics in the environment